Large aberration, Unaligned
| Armor Class | 16 (natural armor) |
|---|---|
| Hit Points | 93 (11d10 + 33) |
| Speed | 5 ft., swim 50 ft. |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 20 (+5) | 14 (+2) | 16 (+3) | 2 (-4) | 10 (+0) | 3 (-4) |
| Saving Throws | — |
|---|---|
| Skills | Perception +4 |
| Damage Vulnerabilities | — |
| Damage Resistances | — |
| Damage Immunities | poison |
| Condition Immunities | poisoned |
| Senses | blindsight 100 ft. (blind beyond this radius), passive Perception 14 |
| Languages | — |
| Challenge | 9 |
When the bloodfin dies, it explodes in a cloud of toxic blood. Each creature in a 10-foot-radius sphere centered on the exploding bloodfin, including any creature swallowed by the bloodfin, must succeed on a DC 15 Constitution saving throw or take 10 (3d6) poison damage. A creature inside the bloodfin when it explodes falls prone in the space formerly occupied by the bloodfin and is no longer blinded or restrained by it.
The bloodfin can breathe only underwater.
The bloodfin makes one Bite attack and one Tail attack.
Melee Attack Roll: +9 to hit (with advantage if the target is a creature missing any hit points), reach 5 ft., one target. Hit: 14 (2d8 + 5) piercing damage, and if the target is a creature, it is grappled (escape DC 15). Until this grapple ends, the target is restrained, and the bloodfin can't bite another target.
Melee Attack Roll: +9 to hit (with advantage if the target is a creature missing any hit points), reach 10 ft., one target. Hit: 19 (4d6 + 5) bludgeoning damage.